Fuel-vaporizing device.



Patented Nev. 1'7, 1914-.

Wbiwwow I My CHESTER F. 3011125011, OF DETROIT, MICHIGAN.

FUEL-VAPORIZING- DEVICE.

Specification of Letters Patent.

Patented is o v. 17, 1914.

Application filed July 3, 1914. Serial No. 848,711.

To all whom it may concern Be it known that I, CHESTER F. JOHNSON, acitizen of the United States, and a resident of Detroit, in the countyof Wayne and State of Michigan, have invented a new and ImprovedFuel-vaporizing Device, of which the following is a specification.

This invention relates to a device for vaporizing fuel for internalcombustion engines. i A

After fuel is vaporized by carbureters or fuel feeders in the usualmanner, it is found that many of the globules condense on the innersurface of the fuel-passage thus impairing the efficiency of theengine.'- This action is accentuated on a cold day, and is alsoparticularly noticeable during the starting of the engine.

The object of the present invention is to provide means whereby fuelwhich has failed to vaporize completely, or which, after havingvaporized, has again condensed, may be carbureted before passing intothe engine cylinder.

This invention consists in a novel heating means located in proximity tothe passage between the mixing chamber of any desired form of fuelfeeder and the intake of the engine.

It further consists in the details of construction shown and described,and particularly pointed out in the claims.

In the accompanying drawing, Figure 1 is a side elevation of awell-known form of engine provided with one embodiment of my invention.Fig. 2 is a vertical section through the upper end of the carbureter andthe lower portion of the intake manifold shown in Fig. 1. Fig. 3 is aside elevation of a modification. Fig. 4 is a vertical sec tion throughthe upper portion of- Fig. 3. Fig. 5 is a perspective view of one end ofthe heating coil. Fig. 6 is a section of another modification.

Similar reference characters refer to like parts throughout the severalviews. In the embodiment of my invention shown in Figs. 1 and 2, 1indicates the drive-shaft, 2 the crank-case, 3 the cylinders, 4 theradiator, and 5 the exhaust manifold of a well known internal combustionengine. Connected to the engine in any desired manner is a carbureter 7that may receive fuel through the pipe 8 from any convenient source.

The carbureter shown in Fig. 1 has a rela- ,ftomthe mixing chamber to apoint in iroximity to the intake portion 10 of the intake manifold 11,and is there preferably provided with the flange 12. This flange issecured to the intake manifold in any desired manner, and may bespacedtherefrom by the annular plate 14. This plate preferably has alaterally extending groove in one of its faces; and seated in the grooveis the outer end 15 of a heating coil, the body of which extends intothe fuel passage and is preferably given several circumferential turns16. The inner end of the coil extends into an annular chamber or well18, formed by the ring 19 which is preferably L shaped in cross section.The coil is preferably coiled one or more times in this well asindicated at 21. While I prefer to form the chamber or well 18 as shownin the drawing. it is obvious that it may be formed in various otherways; for example, the member 19 may be made integral with the bodportion 9 of the fuel feeder.

It will be understood that such portions of the fuel as condense on, theinner surface of the fuel conduit will drip downwardly over the variousturns. 16 of the heating coil, and if not vaporized before. will finallybe received in the Well or chamber 18. Any fuel which collects in thischamber is then vaporized by the part 21 of the coil.

The member from which the coil is formed, as shown in Fig. 5, preferablycomprises an inner resistance wire 23, an outer metallic tubular cover24 to which the free end of the Wire 23 may be soldered or otherwisesecured at 25, and an insulating filling 26 separating the wire 23 and.cover 2 1. The wire '23 may connect to a binding post 27 with which theplate 14 is preferably provided, it being understood that this post isinsulated from the plate 14 in any approved manner. If desired, a secondbinding post 29, positioned on the flange 12, or at any other point inelectrical connection with the body of the carbureter, may be supplied.

Current entering at the-binding post 27 passes through and heatsth'ewire 23, which is of relatively high resistance, then 'to the.

cover 24 and then to the body portion of the carbureter and to thebinding post 29. The heat generated in the wire 28 warms the insulation26 and cover 24L, thus eifectively vaporizing the mist of fuel which hascon densed on the inner wall of the part 9 as heretofore described.

in Figs. 3 and l, my invention is shown applied to engine in which thebody of the carburetor is relatively shorter and the intake portion ofthe manifold correspond ingly longer than in the embodiment previously.described. in this instance the flanged end 12 of the body of thecarburetor is spaced from the flange 31 on the intalre portion 32 of themanifold by means ofan annular plate 33 having an upwardly eX tendinginner rim 3%. lhis rim is spaced slightly from the inner wall of themanifold intake to form a well or chamber 35 in which fuel running downthe inner surface of the intake may collect as before described. As inthe previous case, the heating' element may enter the fuel passagethrough groove formed in the plate 33, and passes through the chamber 85in one or more turns 36, after which it may be con tinued upwardly inthe form of spiral turns 16. Binding posts 3? and 38 corresponding,respectively, to the posts 27 and 29, may be employed if desired. Itwill be understood that current may be supplied to the heating elementfrom any appropriate source so by means of the wires 41 and i2 andswitch bar 43, or one of the wires may be omitted, the circuit beinggrounded to the frame of -.the engine.

- made in the details of my construction without departing from thespirit of my invention. For example, the chambers 18 and 35 mavbereplaced, in certain instances, by a pad or ring of asbestos 4% orsimilar materiul, in which one or more turns 45 of the heating elementsare embedded as shown in Fig. 6. it do not, therefore, desire to belimited otherwise than as indicated by the subjoined claims.

I claim:

1. In combination, two members, one an intake for an internal combustionengine and the other a carburetor operatively connected thereto, saidcarburetor comprising a vaporizing chamber, means whereby an nularchamber is formed in the interior of one of the members at a pointbetween the vaporizing chamber and the engine, said annular chamberserving to collect condensed or unvaporized fuel, and means forvaporizing the fuel which collects in the annular chamber. r

2. In combination, two members, one an intake for an internalcombustion, engine and the other a carburetor operatively connectedthereto, said carbureter comprising a vaporizing chamber, means wherebyan annular chamber is formed in the interior of one of the members at apoint between the vaporizing chamber and the engine, said annularchamber serving to collectconden'sed or unvaporized fuel, and anelectric heater, a portion of which extends into the annular chamber forvaporizing fuel collected therein.

3. In combination, two members, one an intake for an internal combustionengine and the other a carburetor operatively con- ;nected thereto, saidcarburetor comprising a vaporizing chamber, an annular member betweenthe carburetor and the intake, said two first ment oned members and saidannular member together having a passage rotor and said intake to'ethe'r includin a passage that leads from the main vaporizing chamberto the engine, an electric heater located in said passage at a pointbetween the main vaporizing chamber and the intake, said heatercomprising an inner heating element, an insulating cover therefor, and ametallic pro'ecting cover for the insulation, said heating element beingelectrically connected to the metallic cover and the cover beiugelectrically connected to one of the two metallic members.

5. The combination with the fuel intake,

ment with the inner wall thereof and pro-.

jecting therefrom in such manner as to form a receiving chamber 'inwhich drops of liquid fuel running down said wall may be- I and theother a carbureter combustion engine,

\ intake the insulation and connecting to one end of the Wire to serveas a connector between the Wire and thewall of the passage, and acircuit to a current source connecting to the'other end of the Wire.

8. In combination, two members, one an intake for an internal combustionengine operativ'cly connected thereto, said carburetor comprising avaporizing chamber, means whereby a circuinterentially extending liquidreceiver and retainer is formed in the interior of one of the members ata point between the vaporizing chamber and-the engine, said liquid.receiver'and retainer contacting with the Wall of the member in whichit is located and serving to intercept condensed or unvaporized fuelrunning down said well, and means ror vaporizing the fuel which collectsin the liquid receiver and retainer.

9. In combination, two members, one an for an internal combustion engineand the other a carbureter operatiyely connected thereto, saidcarbureter comprising a vaporizing chamber, means whereby an annularfluid receiver is formed in the interior of one of the members at pointbea coiled heating element Within. the

curnferentially extending liquid receiver and retainer is formed in theinterior of the passageway, said liquid receiver and containercontacting with the Wall of the passageway and serving to interceptcondensed or unvaporized fuel running down said Wall, and means forvaporizing the fuel which collects in the liquid receiver and retainer.

11. In combination, means for forming a vaporizing chamber of acarbureter, means for forming a passageway from the vaporizing chamberto the cylinder of an internal conibustion engine, means whereby acircumferentially extending liquid receiver and retainer is formed inthe interior of the passageway, said liquid receiver and containercontacting with the Wall of the passageway and serving to interceptcondensed or unvaporized fuel running down said wall, and an electricheater for vaporizing the fuel which collects in the liquid receiver andretainer.

12. The combination with the fuel intake passage of an internalcombustion engine, of passage engaging With the inner wall thereofthroughout its circumference, the successive coils of the heatingelement being spaced apart "from each other longitudinally of thepassage so that drops of liquid fuel running down said wall may beprogressively heated and vaporized.

' In testimony whereof I have signed this specification in the presenceof two subscribing witnesses.

CHESTER F; JOTll SGN.

Witnesses 3 EDWARD N. Paenrenn, Hose 7V. Kan-maniac.

